Quarterly report pursuant to Section 13 or 15(d)

Revenue from Contracts with Customers - (Details)

v3.20.2
Revenue from Contracts with Customers - (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Disaggregation of Revenue [Line Items]        
Total revenue $ 1,337,764 $ 1,391,942 $ 4,091,628 $ 3,968,310
Customer Concentration Risk | Sales Revenue | Major Customer Number One        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 50.00%   44.00%  
Customer Concentration Risk | Sales Revenue | Major Customer Number Two        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 30.00%   29.00%  
Customer Concentration Risk | Sales Revenue | Major Customer Number Three        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 18.00%   26.00%